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LTC4366ITS8-1#TRMPBF

CategoryPower/power management    Power supply monitoring chip   
File Size278KB,24 Pages
ManufacturerLinear ( ADI )
Websitehttp://www.analog.com/cn/index.html
Download Datasheet View All
LTC4366
High Voltage Surge Stopper
FEATURES
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DESCRIPTION
The
LTC
®
4366
surge stopper protects loads from high
voltage transients. By controlling the gate of an external
N-channel MOSFET, the LTC4366 regulates the output
during an overvoltage transient. The load may remain
operational while the overvoltage is dropped across the
MOSFET. Placing a resistor in the return line isolates the
LTC4366 and allows it to float up with the supply; therefore,
the upper limit on the output voltage depends only on the
availability of high valued resistors and MOSFET ratings.
An adjustable overvoltage timer prevents MOSFET dam-
age during the surge while an additional 9-second timer
provides for MOSFET cool down. A shutdown pin reduces
the quiescent current to less than 14µA during shutdown.
After a fault the LTC4366-1 latches off while the LTC4366-2
will auto-retry.
L,
LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and
ThinSOT is a trademark of Linear Technology Corporation. All other trademarks are the property
of their respective owners. Patents pending.
Rugged Floating Topology
Wide Operating Voltage Range: 9V to >500V
Adjustable Output Clamp Voltage
Controls N-Channel MOSFET
Adjustable Protection Timer
Internal 9-Second Cool-Down Timer
Shutdown I
Q
< 14µA
8-Lead TSOT and 3mm
×
2mm DFN Packages
APPLICATIONS
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Industrial, Automotive and Avionic Surge Protection
High Voltage DC Distribution
28V Vehicle Systems
TYPICAL APPLICATION
Overvoltage Protected 1.5A, 28V Supply
V
IN
28V
IXTK90N25L2
V
OUT
1.5A
0.47µF
V
IN
100V/DIV
Overvoltage Protector Regulates Output at 43V During Transient
250V INPUT SURGE
10
324k
V
DD
SD
TIMER
1µF
GATE
2nF
28V
OUT
FB
BASE
12.4k
V
OUT
20V/DIV
43V CLAMP
28V
LTC4366-2
V
SS
422k
436612 TA01a
46.4k
100ms/DIV
436612 TA01b
436612fe
For more information
www.linear.com/LTC4366
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